The invention provides a high-reliability and high-performance high-power plasma power supply, which comprises a computer total management system, a system controller, a power circuit, a high-power filter reactor and a high-frequency igniter which are connected together, wherein the computer total management system, the system controller and the power circuit form a hierarchical bionic control structure through a CAN network which has a synchronization and fault tolerance mechanism; the power circuit comprises an online work module and an online redundancy module; and the online work module comprises N groups of intelligent power modules with same structures, the online redundancy module comprises M groups of intelligent power modules with same structures, wherein N and M are natural numbers, and N is more than M. The high-reliability and high-performance high-power plasma power supply has the characteristics of higher reliability, better flexibility, energy and material saving, higher efficiency, good processing property, and the like, and is especially suitable for recycling of wastes of electronic wastes, solid wastes and the like, clean production of coal, metal smelting and machining, and the like.